一、引言 对制冷循环经济性的评价习惯上常采用制冷系数来表示,即ε=Q_0/w(Q_0代表制冷量,w代表制冷过程中消耗的功)。但它和其它热力学经济指标,如热机的效率、热泵的供热系数、设备的传热效率等一样,建立在热力学第一定律基础之上,只反映出能量在“数量”方面被利用的程度而不能直接反映出能量在“品质”方面的变化程度。而且这些热力经济指标可大于1(制冷系数)、 First, the introduction of the evaluation of the refrigeration cycle economy often used to indicate the cooling coefficient, that is, ε = Q_0 / w (Q_0 on behalf of the cooling capacity, w represents the power consumed in the cooling process). However, it is based on the first law of thermodynamics just like other thermodynamic economic indicators, such as the efficiency of a heat engine, the heat-supply coefficient of a heat pump, and the heat transfer efficiency of equipment, and only reflects the extent to which energy is utilized in terms of “quantity” But can not directly reflect the degree of change of energy in “quality”. And these thermal economic indicators can be greater than 1 (cooling factor)